Answer :
You should start using the languages in your daily life, also you must have heard a saying which is."Knowledge increases when you give it to others." You can apply the same rule in your daily life.Whenever you want to learn any language learn it by heart you will surely be a master in it
Learn English by reading Newspaper(Times of India) and watch BBC news. And also try to speak whether it is right or wrong you speak dont worry about your grammar mistakes.